>> What is the best way to diagnose muscle invasive bladder cancer CT scans or MR scan.?
Unfortunately I learned a little in this area in the last couple of months.
I’m no doctor, so what I write here is base on my own personal learning experience. :-/
A CT scan is not showing a particular detailed pictures, so the way the doctors see indications for invasive bladder cancer or a tumor, is by comparing the thickness of the bladder-wall, to the rest of the bladder-wall.
If the bladder has a particular area where it gets thicker then the rest of the bladder-wall, the doctor assumes this is a tumor.
By using an ordinary MRI scanners you can first off al have more details then with the CT.
By using High Field MRI scanners you can not only have details, but you can also look at flows.
By injecting contrast into the body, and taking pictures with intervals, you can look at a suspected tumor area, and by looking at the wash-in and wash-out of the injected contrast you will have a pretty good idea it this is a tumor or something else.
Both ways only offers indications for cancer tumors. You really don’t know for sure how bad it is before a biopsy it taken, but the MR scanner indications are better and more precise then the CT scanner.
If you are looking for a High Field MRI scanners it is, in my part of the world, defined by having from 1,5 to 3 Tesla.
Jan